Sealing machine for fiber containers



Aug. 18, 1925.

C. C. GAMM SEALING MACHINE FOR FIBER CONTAINERS Fil'ed Oct. 31. 1924 2sheets-sham. 1

IN VEN TOR. Ciarks 66'072777;

A TTORN 5.

Aug. 18, 1925. 1,549,862

c. c. GAMM SEALING MACHINE FOR FIBER CONTAINERS Filed Oct. 51. 1924 2Sheets-Sheet. 2

HINVENTOR. (ZarFe L 622mm BK I w Ll/M" Patented Aug. 13, was.

CHARLES C. GAMM, F $T.. PAUL,MI1\TNESOTA, ASSIGNOB. T0 WALDORF PAPERPRQD- UCTS COMPANY, A CORPORATION OF MINNESOTA,

SEALING MAQI INE FOB FIBER; CONTAINERS;

Application filed October 3 1324:. Serial No. 7 7,034.

'To all whom it may concern:

Be it known that I, CHARLES C. GAMM,

a citizen of the United States, residing at St. Paul, in the county ofRamsey and State of Minnesota, have invented new and useful Improvementsin a Sealing Machine for Fiber Containers.

It is my object to facilitate sealing fiber containers, such as thoseconstructed of paper or straw board or equivalent material, and at thesame time to insure complete sealing.

More particularly, it is my object to provide a machine adapted to beoperated to simultaneously fold, square and seal a plurality of securingflaps upon a rectangular container. This invention also includes certainother novel features of construction, which will be more fully pointedout in the following specification and claims.

Referring to the accompanying drawings, which illustrate the best formof my device at present known to me, Figure 1 is a side elevation of myimproved machine showing 25 a container in place upon the form; Fig. 2is an end view of a container of the type upon which my device isadapted to operate; Fig. 3 is a fragmentary sectional view through. thebottom of the container; Fig. 4 is a plan view of the machine with thetable top and form removed; Fig. 5 is a detail end view of the pedal andassociated parts; Fig. 6 is a plan view of the pedal; Fig. 7 is a planview of the table top and form; Fig. 8 is a side elevation of thecentral slide and operating rod; and Fig. 9 is a detail perspective viewof the clamp supporting plate, one of the bosses being broken away toshow parts otherwise concealed. 4 My machine is provided with a framehaving legs 10 connected by transverse members 11 and supporting a table12. Mounted centrally upon the table 12 is a form 13 adapted to fitwithin a rectangular container or caddy 14 to be sealed. Formed integralwith the several sides of the container 14 is a series of flaps 16adapted to be folded over and be secured upon the bottom or outersurface of the panel 15. The form 13 has a plain upper surface adaptedto support an end or bottom panel 15 of the container 14.

To simultaneously fold and seal the several flaps 16 upon the panel 15,I provide four pinerle es 1?} carried 19 1 t upper ends of arms 18.These arms 18 extend upward through apertures 19 (Fig. 7) in the table12 and are pivotally supported beneath the table upon horizontal pins20. As clearly shown in Fig. 1, each of the arms 18 is provided with apair of {hubs 21 through which a pin 20 passes. Extending downward fromthe hubs 21, the arms 18 are provided with bifurcated lower ends 22,which are joined by pins 23 to rods 24. The rods 24: are adapted toactuate the arms 18 as hereinafter described. Substantially verticalsquaring surfaces 25 are formed upon the arms 18 beneath the plates 17for engagement with the lateral surfaces of the container 14 when inplace upon the form 13.

The pins. 20 carrying the arms 18 extend through perforations in theears 26, and said ears are formed integral with a series of sleeves orbosses 27, extending upward from a plate 28 (Figs. 1 and 9). The severalsleeves 27 and plate 28 are bored to receive 'four vertical rods 29,which are fixed at neath said plate to a pedal lever 35 by a link 36.Each of the several-pairs of ears .33 are joined by one of the rods 24with the bifurcated lower end of one of the clam arms 18. To render thelengths of the r0 s 2% adjustable, the heads, which are joined to theends 22 of the arms 18, are made revoluble upon threaded ends 2%? ofsaid rods, as indicated in Fig. 4.

The pedal lever 35 is pivoted at one end upon a horizontal shaft37extending between a pair of the legs 10, and the free end 38 of saidpedal is supported by a coiled tension spring 39, which is fixed at itsupper end upon the bottom of the table 12. The end 38 of the lever 35may be depressed against the action of the spring 39, and when depressedto its fullest extent, is caught by a detent 40. This detent is pivotedat 4;]. up n a ve t a p ojection 42 of the 112129 A triangular tooth onthe detent 40, normally projects, so as to engage the upper surface ofthe pedal 35, but when the pedal is depressed, .it strikes said-tooth toswing the detent out of its path.)

O eration.

In operation, the eontainerlettobe sealed is placed upon the form 18with the flaps 16 extended upward above the top of said form. The panel15 is now laid upon the top of theforn lii and adhesive is applied tothemarginsofsaid-panel, or to theabutting surfaces, of the flaps 16. pedalmaybe depressed to simultaneously fold,; square and, seal the severalflaps 16 upon the panel 15., hen the lever 35 is depressed, the slide32, beingconnected by the ,arms iva. andlink 86 with said lever, is

drawn downward upon the central shaft 31, carrying the nner ends of theobllque connecting rods 24; therewith. ,As the inner ends of said rodsare moved downward, the lower ends, of the arn1s 18 are forced out wardtopivot saidarms uponthe pins 20 andstrike the flaps lo with the innerends of the,plat es 17. As the rods 2stapproach the horizontal, thesurfaces 25 strike the lateral surfaees ofthe container 14 and squarethe 17 untilthe adhesive has dried or set su'lii-.

ciently to insure aproper seal As will now bereadily understood, thecontainer 1a is releasedby striking the ,detent out of engageinent withthe pedal 35 and allowing the springs ,BQ andSS) to return the arms 18toiopen' position shown in Fig, 1.

While Lhave illustrated a machine -particularly adapted to seal acontainer or caddy having a substantially square end or botto1n,.,itwill ,be obvious that by minor changes in form and proportions, themachine maybe adapted to seal containers of other types. Any 'suchchange, is consid ered, within the spirit of my invention.

Having described invention what I claj n as new anddesire to protect byLetters atent s;

1. Inaniiehinefor sealing a container of, the type ha ving a pair ofoppositely dis-' pesedifi li J uneas .i ve lap a e P l; 'a fr-ainehavinga formadapted to be insert The end 38 of the ed in said container,a pair of arms tiltable and movable substantially longitudinally in saidframe, laterally projecting plates on said arms -adapted to engage said,flaps, means for tilting saidarms to fold said flaps upon said paneland means for actuating said arms longitudinally to press said flapsupon said panel.

2. In a machine for sealing containers having flaps, a frame adapted tosupport said container, a pair of arms pivoted and movable.substantially longitudinally in said frame, plates on said arms havingplain surfaces adapted to engage said flaps, means for pivoting saidarms. to fold said flaps upon said container and means for actuatingsaid arms longitudinally to press said flaps upon said panel.

3. In a machine for sealing a container having a pair of oppositelydisposed flaps, adapted to overlap a side panel, a frame adapted tosupport saidcont-ainer, a pair of arms pivoted andmovable substantiallylon-. gitudinally in said frame, laterally projecting plates on saidarms adapted to engage said flaps, plain surfaces formed on said armstoengage opposite sides of a container on said support, andmeans foractuating said arms longitudinally to press said flaps upon said panelwith said plates.

4c. In a machine for sealing a container having a plurality of flapsadapted to overlap a side panel of'the container, a rigid support forthe container, a plurality of arms tiltable toward and away from acontainer on said support, clamping plates on said arms adapted toengage said flaps, a lever adapted to be manipulated "to'move said. armstoward the container, and means for clamping said plates upon said flapsto sealsaidflaps upon said panel. I

5:111 a .niacl'iine for sealing a container having a plurality ,of flapsadapted to overlap .a side'panel or the container, a form adapted to fitwithin the container, a pluralitv of'arms tiltable toward and away froma container on said form, clamping plates arranged on said arms toengage said flaps,

squaring surfaces adjacent to said plates on said arms adapted to engagethe lateral surfaces of a container on said form, means for tilting saidarms to i press said surfaces against the container, and means forclampingsaid platesupon said flaps to maintain" said flaps in engagementwith s'aidpanel.

6. In a machine for sealing a rectangula-r container havinga-pluralityof flaps adapted] to overlapa sidepan elpa rigid support'for thecontainer, a pair of arms tiltable' towardandaway from opposite sides/ofa container on said support, clamping plates on said arms adapted toengage said flaps, squaring surfaces substantially perpendicular tosaidplates on said arms ad apted to engage thej latter surfaces of acontainer1on=said"sup=-- port, a lever adapted to be manipulated to tiltsaid arms and thereby press said surfaces against the container, and amovable support for said arms, arranged to be actuated by said lever toclamp said plates upon said flaps to secure said flaps upon said panel.

7. In a machine for sealing a container having a plurality of flapsadapted to over lap a side panel, a rigid support for the container, aplurality of arms tiltable toward and away from a container on saidsupport, a slidable support for said arms, clamping plates on said armsadapted to engage said flaps, a lever adapted to be manipulated to tiltsaid arms toward the container, and means operable by said lever formoving said slidable support-to clamp said plates upon said flaps. 1

8. In a machine for sealing a container having a plurality of flapsadapted to overlap a side panel, a rigid, substantially horizontalsupport for the container, a plurality of substantially upright armstiltable toward and away from a container on said support, laterallyvprojecting clamping plates on said arms adapted to engage said flaps, alever adapted to be manipulated to tilt said arms into engagement withthe container and means for drawing said arms downward to clamp saidplates upon said flaps.

9. In a machine for sealing a container having a pair of oppositelydisposed flaps adapted to overlap a panel, a table arranged to supportsaid panel in horizontal position, said table being formed withapertures adjacent to opposite sides of a container supported thereby, apair of arms pivoted beneath said table and extending upward.

. ment to said arms, a lever adapted to be manipulated to operate saidslide and to draw said support downward and thereby clamp said platesupon said flaps, and resilient means for raising said support and lever.

10. In a machine for sealing a container having a pair of oppositelydisposed flaps adapted to overlap a panel, a table, a form adapted tofit within said container and arranged to support said panel inhorizontal position, said table being formed with apertures adjacent toopposite sides of said form, a pair of arms pivoted beneath said tableand extending upward through said apertures, substantially horizontalplates arranged on the upper ends of said arms to engage said flaps,substantially vertical surfaces disposed on said arms to strike thesides of said container, a vertically movable support for said arms, aslide movable on said support to impart pivotal movement to said arms, alever adapted to be manipulated to operate said slide and to draw saidsupport downward and thereby clamp said plates upon said flaps andsquare the con tainer with said vertical surfaces and resilient meansfor raising said support and lever.

In testimony whereof, I have hereunto signed my name to thisspecification.

CHARLES C. GAMM.

